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<?php
/**
* This file is part of Collision.
*
* (c) Nuno Maduro <enunomaduro@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace NunoMaduro\Collision;
use NunoMaduro\Collision\Contracts\ArgumentFormatter as ArgumentFormatterContract;
use NunoMaduro\Collision\Contracts\Highlighter as HighlighterContract;
use NunoMaduro\Collision\Contracts\SolutionsRepository;
use NunoMaduro\Collision\Contracts\Writer as WriterContract;
use NunoMaduro\Collision\SolutionsRepositories\NullSolutionsRepository;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\OutputInterface;
use Whoops\Exception\Frame;
use Whoops\Exception\Inspector;
/**
* This is an Collision Writer implementation.
*
* @author Nuno Maduro <enunomaduro@gmail.com>
*/
class Writer implements WriterContract
{
/**
* The number of frames if no verbosity is specified.
*/
const VERBOSITY_NORMAL_FRAMES = 1;
/**
* Holds an instance of the solutions repository.
*
* @var \NunoMaduro\Collision\Contracts\SolutionsRepository
*/
private $solutionsRepository;
/**
* Holds an instance of the Output.
*
* @var \Symfony\Component\Console\Output\OutputInterface
*/
protected $output;
/**
* Holds an instance of the Argument Formatter.
*
* @var \NunoMaduro\Collision\Contracts\ArgumentFormatter
*/
protected $argumentFormatter;
/**
* Holds an instance of the Highlighter.
*
* @var \NunoMaduro\Collision\Contracts\Highlighter
*/
protected $highlighter;
/**
* Ignores traces where the file string matches one
* of the provided regex expressions.
*
* @var string[]
*/
protected $ignore = [];
/**
* Declares whether or not the trace should appear.
*
* @var bool
*/
protected $showTrace = true;
/**
* Declares whether or not the title should appear.
*
* @var bool
*/
protected $showTitle = true;
/**
* Declares whether or not the editor should appear.
*
* @var bool
*/
protected $showEditor = true;
/**
* Creates an instance of the writer.
*/
public function __construct(
SolutionsRepository $solutionsRepository = null,
OutputInterface $output = null,
ArgumentFormatterContract $argumentFormatter = null,
HighlighterContract $highlighter = null
) {
$this->solutionsRepository = $solutionsRepository ?: new NullSolutionsRepository();
$this->output = $output ?: new ConsoleOutput();
$this->argumentFormatter = $argumentFormatter ?: new ArgumentFormatter();
$this->highlighter = $highlighter ?: new Highlighter();
}
/**
* {@inheritdoc}
*/
public function write(Inspector $inspector): void
{
$this->renderTitleAndDescription($inspector);
$frames = $this->getFrames($inspector);
$editorFrame = array_shift($frames);
if ($this->showEditor && $editorFrame !== null) {
$this->renderEditor($editorFrame);
}
$this->renderSolution($inspector);
if ($this->showTrace && !empty($frames)) {
$this->renderTrace($frames);
} else {
$this->output->writeln('');
}
}
/**
* {@inheritdoc}
*/
public function ignoreFilesIn(array $ignore): WriterContract
{
$this->ignore = $ignore;
return $this;
}
/**
* {@inheritdoc}
*/
public function showTrace(bool $show): WriterContract
{
$this->showTrace = $show;
return $this;
}
/**
* {@inheritdoc}
*/
public function showTitle(bool $show): WriterContract
{
$this->showTitle = $show;
return $this;
}
/**
* {@inheritdoc}
*/
public function showEditor(bool $show): WriterContract
{
$this->showEditor = $show;
return $this;
}
/**
* {@inheritdoc}
*/
public function setOutput(OutputInterface $output): WriterContract
{
$this->output = $output;
return $this;
}
/**
* {@inheritdoc}
*/
public function getOutput(): OutputInterface
{
return $this->output;
}
/**
* Returns pertinent frames.
*/
protected function getFrames(Inspector $inspector): array
{
return $inspector->getFrames()
->filter(
function ($frame) {
// If we are in verbose mode, we always
// display the full stack trace.
if ($this->output->getVerbosity() >= OutputInterface::VERBOSITY_VERBOSE) {
return true;
}
foreach ($this->ignore as $ignore) {
if (preg_match($ignore, $frame->getFile())) {
return false;
}
}
return true;
}
)
->getArray();
}
/**
* Renders the title of the exception.
*/
protected function renderTitleAndDescription(Inspector $inspector): WriterContract
{
$exception = $inspector->getException();
$message = rtrim($exception->getMessage());
$class = $inspector->getExceptionName();
if ($this->showTitle) {
$this->render("<bg=red;options=bold> $class </>");
$this->output->writeln('');
}
$this->output->writeln("<fg=default;options=bold> $message</>");
return $this;
}
/**
* Renders the solution of the exception, if any.
*/
protected function renderSolution(Inspector $inspector): WriterContract
{
$throwable = $inspector->getException();
$solutions = $this->solutionsRepository->getFromThrowable($throwable);
foreach ($solutions as $solution) {
/** @var \Facade\IgnitionContracts\Solution $solution */
$title = $solution->getSolutionTitle();
$description = $solution->getSolutionDescription();
$links = $solution->getDocumentationLinks();
$description = trim((string) preg_replace("/\n/", "\n ", $description));
$this->render(sprintf(
'<fg=blue;options=bold>• </><fg=default;options=bold>%s</>: %s %s',
rtrim($title, '.'),
$description,
implode(', ', array_map(function (string $link) {
return sprintf("\n <fg=blue>%s</>", $link);
}, $links))
));
}
return $this;
}
/**
* Renders the editor containing the code that was the
* origin of the exception.
*/
protected function renderEditor(Frame $frame): WriterContract
{
$file = $this->getFileRelativePath((string) $frame->getFile());
// getLine() might return null so cast to int to get 0 instead
$line = (int) $frame->getLine();
$this->render('at <fg=green>' . $file . '</>' . ':<fg=green>' . $line . '</>');
$content = $this->highlighter->highlight((string) $frame->getFileContents(), (int) $frame->getLine());
$this->output->writeln($content);
return $this;
}
/**
* Renders the trace of the exception.
*/
protected function renderTrace(array $frames): WriterContract
{
$vendorFrames = 0;
$userFrames = 0;
foreach ($frames as $i => $frame) {
if ($this->output->getVerbosity() < OutputInterface::VERBOSITY_VERBOSE && strpos($frame->getFile(), '/vendor/') !== false) {
$vendorFrames++;
continue;
}
if ($userFrames > static::VERBOSITY_NORMAL_FRAMES && $this->output->getVerbosity() < OutputInterface::VERBOSITY_VERBOSE) {
break;
}
$userFrames++;
$file = $this->getFileRelativePath($frame->getFile());
$line = $frame->getLine();
$class = empty($frame->getClass()) ? '' : $frame->getClass() . '::';
$function = $frame->getFunction();
$args = $this->argumentFormatter->format($frame->getArgs());
$pos = str_pad((string) ((int) $i + 1), 4, ' ');
if ($vendorFrames > 0) {
$this->output->write(
sprintf("\n \e[2m+%s vendor frames \e[22m", $vendorFrames)
);
$vendorFrames = 0;
}
$this->render("<fg=yellow>$pos</><fg=default;options=bold>$file</>:<fg=default;options=bold>$line</>");
$this->render("<fg=white> $class$function($args)</>", false);
}
/* Let's consider add this later...
* if ($vendorFrames > 0) {
* $this->output->write(
* sprintf("\n \e[2m+%s vendor frames \e[22m\n", $vendorFrames)
* );
* $vendorFrames = 0;
* }.
*/
return $this;
}
/**
* Renders an message into the console.
*
* @return $this
*/
protected function render(string $message, bool $break = true): WriterContract
{
if ($break) {
$this->output->writeln('');
}
$this->output->writeln(" $message");
return $this;
}
/**
* Returns the relative path of the given file path.
*/
protected function getFileRelativePath(string $filePath): string
{
$cwd = (string) getcwd();
if (!empty($cwd)) {
return str_replace("$cwd/", '', $filePath);
}
return $filePath;
}
}